Isentropic Pressure Relation Temperature Formula

Equation for calculate isentropic pressure relation temperature is,

P / P_t = (T / T_t)^{(γ / γ - 1)}

Where,
P / P_t = Isentropic Flow Relation Between Pressure and Total Pressure
P = Pressure
P_t = Total Pressure
T = Temperature
T_t = Total Temperature
γ = Specific Heat Ratio